Marcelo Iturbe: > Hello, > Thank you for your quick response. > > I apologize if I was not completely clear. I have set up virtual domains and > domain aliasing before, all going through the same interface sharing the > same IP. > > In this case, I need domainA.com (thus mail.domainA.com) and domainB.com > (thus mail.domainB.com) to go out using different IP addresses. > > So network Card 1 will have IP address of 200.nn.nnn.30 and Network Card 2 > will have IP address of 206.nnn.nnn.65 > > In the case that domainA.com gets blacklisted by IP, domainB.com will not be > affected. > > Despite the fact that both domains are on the same physical machine, they > must not share any mail information or records (SPF, MX, A, CNAME etc)
You don't need multiple network cards. You simply need a box with multiple network addresses. Use multiple Postfix instances with unique settings for inet_interfaces, myorigin, and mydestination. While this has always been possible, Postfix 2.6 adds some tools to make management easier. http://www.postfix.org/MULTI_INSTANCE_README.html Wietse
